Method of producing asphaltic emulsion



Patented July 19, 1932 UNITED STATES FREDERIC QUECK, or oNnoE, irronismv METHOD OF PRODUCING ASPHALTIG EMULSIQN" I No Drawing.

My invention relates to an improvement in a .waterproofed fibrous product and the method of producing the same and has for its object the production of awaterproofed fibrous product which will be highly water proof and of economical manufacture.

Another object of the invention is the provision of an emulsion whereby a waterproofing material may beeasily and cheaply rendered colloidal or emulsified for its ready mixing with the fibre from which the waterproofedmaterial is made. i

The invention lends itself well to the manufacture of card board and similar material for the various uses to which waterproofed card board and the like is put. As a waterproofing agent I prefer to use a bituminous product such as tar, pitch, asphalt, industrial asphalt or the by-products Z of the oil industry such as the well lmown stanolite, parolite, and similar products. Parolite and stanolite are the proprietary names of blown asphalts. These are characterized by good gloss and freedom from oily and greasy constituents and possess exceptional weather resisting properties.

In carrying out the process it is preferred to mix the fibrous product in a beater or a similar mixing mechanism with the waterproofing agent, but it is necessary before this mixing operation that the waterproofing agent be emulsified or reduced to a colloidal .Statein a suitable vehicle in which the fibre may be beaten and mixed. I have found that a very economical emulsifying agent by which the waterproofing agent may be emulsified or reduced to a colloidal state may be prepared from waste leather, bones, hoofs, horns and similar glutin containing material.

5 In the specification and claims these materials may be generally referred to as albuminoid substances. These albuminoid substances are first reduced to a colloid by boiling the same until they are reduced to a glutinous mass of jelly like consistency. In

this product the albuminoid substances will form by weight (in a dry condition) about 25% and the water will form 75%.

In order to make the emulsionin which the waterproofing material is emulsified or re- Application filed March 20,

1931. Serial No. 524,216.

duced to colloidal state, I form an emulsion of rosin soap and albuminoid. The completed emulsion of waterproofed material in which the fibre is beaten until it is thoroughly saturated with the mass consists preferably of asphalt product (in a melted form) 60%, the albuminoid (in a dry state) 20% to 30%, and the rosin soap emulsion (in a dry state) ,l0% to 20%.

maintained at or heated to the temperature of 160 degrees F., and there is added thereto, while in a melted state the amount of asphalt or Waterproofing material as stated above. The whole mass is then thoroughly mixed while water is added slowly until emulsified, and added to the beater in which the fibre pulp is placed and beaten and thoroughly mixed until there has been effected the saturation desired. There is then added to the m1xed mass, acid or acid salts such as sulphuric. acid or alum which will cause the asphalt to be precipitated upon the fibres, or at least lose its colloidal condition so that it may adhere to the fibres.

The product is then run through the felting machine and the pressing and drying rollers commonly used in paper mills, and the product resulting will be one which will be highly waterproof and possessed of considerable strength over that possessed by other similar waterproofed material. The albuminoid serves to stiffen and strengthen the product and at the same time is a cheap minoid substance being substantially 60 to v V i r 1,867,923

2. The method of preparing an asphaltic V emulsion comprising preparing first an emulsifying agent by mixing in aqueous, medium rosin soap and an albuminoid substance in the ratio by Weight in a range of 30 to 20 of the latter to 10 to 20 of the former, and adding a melted asphalt product thereto in the ratio by weight of 60 of the osphalt product to 40 ofthe combined Weights of mixed rosin soap and albuminoid substance. 7 In testlmony whereof I' have signedthe foregoing specification FREDERIC QUECK. 

